Optical coupler, endoscope system, and method for assembling optical coupler

Abstract

The invention discloses an optical coupler, an endoscope system and an assembly method of the optical coupler, and relates to the technical field of medical instruments. The optical coupler comprises an inner core module, the inner core module comprises an inner core and an optical assembly located in the inner core, and the inner core and the optical assembly form an integrated structure; the optical coupler further comprises an adjusting module, the adjusting module is of an integrated structure, the inner core is sleeved with the adjusting module in the axial direction of the inner core module, and the adjusting module is rotationally arranged outside the inner core. The optical coupler further comprises a clamp module, the clamp module is of an integrated structure, and the clamp module is fixedly connected with the far end of the inner core. According to the optical coupler, the assembly procedure can be simplified, and the assembly efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an optical coupler, an endoscope system and an assembly method of the optical coupler. Background Art

[0002] The endoscope system is a commonly used medical device that can directly enter the human body cavity for inspection and provide doctors with sufficient diagnostic information. The endoscope system includes an endoscope and a camera. The endoscope is used to be inserted into the cavity to transmit light to the cavity and receive light from the cavity. The endoscope is also connected to the camera, and the camera can capture video or images based on the light received by the endoscope from the cavity. The endoscope system also includes a camera control unit, and the camera is connected to the camera control unit. The camera control unit is used to process the video or image captured by the camera and display or store the processed video or image.

[0003] In the related art, the endoscope and the camera are connected via an optical coupler, and the optical coupler is used to releasably couple the endoscope to the camera. The optical coupler may include an optical component for focusing light received from the endoscope onto an imaging sensor assembly in the camera. The optical component includes a plurality of lenses, such as lenses and / or prisms. The optical coupler also includes an adjustment ring for adjusting the position of the optical component; the optical coupler also includes a plurality of clamps for clamping with the eyepiece cover of the endoscope.

[0004] The optical coupler in the related art has a complex structure. When assembling, it is necessary to install multiple lenses on the inner cylinder one by one, and then seal the end of the inner cylinder, and finally assemble the adjustment ring and multiple clamps on the inner cylinder. This assembly method has the problem of low assembly efficiency. Therefore, providing an optical coupler that can be assembled quickly is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] The invention discloses an optical coupler, an endoscope system and an assembly method of the optical coupler, so as to solve the technical problem of low assembly efficiency of the optical coupler in the related art.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions: A first aspect of the present invention discloses an optical coupler.

[0007] The optical coupler of the present invention comprises an inner core module, wherein the inner core module comprises an inner core and an optical component located in the inner core, wherein the inner core and the optical component form an integrated structure; the optical coupler further comprises an adjustment module, wherein the adjustment module forms an integrated structure, wherein the adjustment module is sleeved on the outside of the inner core along the axial direction of the inner core module, and wherein the adjustment module is rotatably disposed outside the inner core; the optical coupler further comprises a clamp module, wherein the clamp module forms an integrated structure, and wherein the clamp module is fixedly connected to the distal end of the inner core.

[0008] According to an optional embodiment, the inner core module is a closed structure, and a first magnetic drive component is also provided in the inner core, and the first magnetic drive component is fixedly connected to the optical component; the adjustment module includes an adjustment ring and a second magnetic drive component, and the second magnetic drive component is fixed on the adjustment ring. The second magnetic drive component and the first magnetic drive component attract each other, and based on the rotation of the adjustment ring, the optical component is driven to move along the axial direction of the inner core.

[0009] According to an optional embodiment, an inner sleeve is further provided in the inner core, the optical component is located in the inner sleeve, and the first magnetic drive component is rotatably provided on the outer wall of the inner sleeve.

[0010] According to an optional embodiment, the optical component includes a lens and a mounting seat, the lens is provided with a first boss, the mounting seat is provided with an inclined groove, the inner sleeve is provided with a first slide groove, the first slide groove is arranged along the axial direction of the inner sleeve, and the first boss is slidably arranged in the inclined groove and the first slide groove, the mounting seat is provided with a second boss, the second boss passes through the inner sleeve and is fixedly connected to the first magnetic drive assembly.

[0011] According to an optional embodiment, the first magnetic drive assembly includes a first ring body and a first magnet, the number of the first magnets is multiple, and the multiple first magnets are fixed on the first ring body; the second magnetic drive assembly includes a second ring body and a second magnet, the number of the second magnets is multiple, and the multiple second magnets are fixed on the second ring body, and the magnetism of the second magnet is opposite to that of the first magnet at the position corresponding to the first magnet.

[0012] According to an optional embodiment, the first magnet at least partially protrudes from the surface of the first ring body; and / or a preset gap is maintained between the surface of the first magnet and the inner wall of the inner core; and / or the first ring body is made of plastic.

[0013] According to an optional embodiment, the second magnet is embedded in the second ring body, and the surface of the second magnet is lower than the surface of the second ring body; and / or the second ring body is made of plastic.

[0014] According to an optional embodiment, the optical coupler further comprises a sealing component, wherein the sealing component is located at both ends of the second magnetic drive component, and the sealing component maintains a sealed state between the inner core module and the adjustment ring.

[0015] According to an optional embodiment, one of a limit groove and a limit column is provided on the adjustment ring, and the other of a limit groove and a limit column is provided on the inner core module and / or the sealing assembly, and the limit column is located in the limit groove.

[0016] A second aspect of the present invention discloses a method for assembling an optical coupler.

[0017] The optical coupler assembly method of the present invention, wherein the optical coupler is the optical coupler described in any technical solution of the present invention, comprises the following steps: The adjusting module is sleeved outside the inner core along the axial direction of the inner core module, and the adjusting module is rotatably installed outside the inner core; The clamp module is fixedly connected to the distal end of the inner core.

[0018] A third aspect of the present invention discloses an endoscope system.

[0019] The endoscope system of the present invention comprises an endoscope, a camera head and an optical coupler. The optical coupler is the optical coupler described in any one of the technical solutions of the present invention, and the optical coupler is used to detachably couple the endoscope to the camera head.

[0020] The technical solution adopted by the present invention can achieve the following beneficial effects: The optical coupler of the present invention comprises an inner core module, an adjustment module and a clamp module, and the inner core module, the adjustment module and the clamp module are all integrated structures. During assembly, it is only necessary to sleeve the adjustment module on the outer periphery of the inner core module along the axial direction of the inner core module, and then fix the clamp module to the far end of the inner core module to complete the assembly. Compared with the traditional optical coupler, this assembly method reduces the installation of optical components and the process of closing the end of the inner cylinder, and also reduces the assembly of the adjustment ring and the assembly process of multiple clamps, simplifies the assembly procedure, improves the assembly efficiency of the optical coupler, and solves the technical problem of low assembly efficiency of the optical coupler in the related art. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 is a schematic diagram of the cooperation between the optical coupler and the eyepiece cover according to an embodiment of the present application; Figure 2 is a schematic diagram of an optical coupler according to an embodiment of the present application; Figure 3 is an exploded view of an optical coupler according to an embodiment of the present application; Figure 4 is a first partial schematic diagram of an optical coupler according to an embodiment of the present application; Figure 5 is a second partial schematic diagram of the optical coupler according to an embodiment of the present application; Figure 6 This is a first partial schematic diagram of an inner core module according to an embodiment of the present application; Figure 7 is a second partial schematic diagram of the inner core module of an embodiment of the present application; Figure 8 is a third partial schematic diagram of the inner core module of the embodiment of the present application; Fig. 9 is a fourth partial schematic diagram of the inner core module of an embodiment of the present application; Fig.10 is a first schematic diagram of an inner sleeve in an embodiment of the present application; Fig.11 is a second schematic diagram of an inner sleeve in an embodiment of the present application; Fig.12 is a schematic diagram of a first magnetic drive assembly according to an embodiment of the present application; Fig.13 is a schematic diagram of a second magnetic drive assembly according to an embodiment of the present application; Fig.14 is a partial schematic diagram of an adjustment ring of an embodiment of the present application; Fig.15 is a schematic diagram of a clamp module according to an embodiment of the present application; Fig.16 It is a partial schematic diagram of the clamp module of the embodiment of the present application.

[0023] In the figure: 100, inner core module; 110, inner core; 120, optical component; 121, lens; 1211, first convex column; 121a, first lens; 121b, second lens; 121c, third lens; 121d, fourth lens; 122, mounting seat; 1221, inclined groove; 1222, second convex column; 130, first magnetic drive component; 131, first ring body; 132, first magnet; 140, inner sleeve; 141, first slide groove; 142, second slide groove; 150, limit column; 20 0. Adjustment module; 210. Adjustment ring; 211. Limiting groove; 212. Installation cavity; 212a. First inner wall; 212b. Second inner wall; 220. Second magnetic drive assembly; 221. Second ring body; 222. Second magnet; 200a. Focus adjustment module; 200b. Zoom adjustment module; 300. Clamp module; 310. Clamp seat; 320. Clamp; 330. Housing; 340. Push button assembly; 400. Sealing assembly; 410. Sealing ring; 420. Support part; 500. Eyepiece cover. DETAILED DESCRIPTION

[0024] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0025] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0026] In each embodiment of the present application, "proximal end" and "distal end" refer to the position of each component relative to the user in the use environment, wherein the end closer to the user is designated as the "proximal end" and the end farther from the user is designated as the "distal end".

[0027] In the optical coupler of the related art, when assembling, multiple lenses need to be installed one by one in the inclined groove of the inner cylinder, and then the end of the inner cylinder is closed, and finally the adjustment ring and multiple clamps are assembled on the inner cylinder. This assembly method has the problem of low assembly efficiency. To this end, the present application provides an optical coupler, which assembles the optical component and the inner cylinder into a modular structure, and also assembles multiple clamps into a modular structure. When assembling, it is only necessary to assemble the adjustment ring and the clamp module on the modular inner cylinder, which is conducive to improving assembly efficiency.

[0028] The following is combined with Figures 1 to 16 , the optical coupler, endoscope system and assembly method of the optical coupler provided in the present application are described in detail through specific embodiments and their application scenarios.

[0029] The first aspect of this embodiment describes the optical coupler in detail.

[0030] The optical coupler of this embodiment is used to connect the endoscope and the camera to realize signal transmission between the endoscope and the camera. The optical coupler is particularly used to connect the eyepiece cover 500 of the endoscope, such as Figure 1 Specifically, the distal end of the endoscope is used to be inserted into the cavity to be inspected, and the proximal end of the endoscope is connected to the camera via an optical coupler. The structure of the endoscope can be prior art and is not shown here.

[0031] The optical coupler of this embodiment includes an inner core module 100, such as Figure 3 The inner core module 100 includes an inner core 110 and an optical component 120 located in the inner core 110. The inner core 110 and the optical component 120 form an integrated structure. Figure 1 and Fig. 9 As shown. Exemplarily, the optical assembly 120 includes a plurality of lenses 121, and the plurality of lenses 121 are one or more of lenses, prisms, etc., such as Fig. 9 The plurality of lenses 121 are distributed along the axial direction of the inner core 110 , and at least one of the plurality of lenses 121 can be moved along the axial direction of the inner core 110 to adjust the image size and / or clarity.

[0032] The inner core 110 and the optical component 120 in this embodiment form an integrated structure, which means that the optical component 120 and the inner core 110 are pre-assembled into a whole. Figure 3 In this embodiment, the optical component 120 is pre-assembled in the inner core 110, and the inner core 110 and the optical component 120 are formed into a whole. When the optical coupler is assembled, the inner core 110 and the optical component 120 can be assembled as a whole to improve the assembly efficiency of the optical coupler.

[0033] The optical coupler of this embodiment further includes an adjustment module 200, such as Figure 3 As shown. The adjustment module 200 is formed as an integrated structure. The adjustment module 200 is sleeved on the outside of the inner core 110 along the axial direction of the inner core module 100, and the adjustment module 200 can be rotatably arranged outside the inner core 110. Based on the rotation of the adjustment module 200, the adjustment module 200 can be used to adjust the position of the optical component 120 in the axial direction of the inner core 110, so as to adjust the imaging size and / or clarity. Exemplarily, the number of the adjustment modules 200 can be one or two.

[0034] The adjustment module 200 described in this embodiment is formed as an integrated structure. For example, when the adjustment module 200 has an adjustment ring 210 and a second magnetic drive assembly 220, the second magnetic drive assembly 220 is fixed on the adjustment ring 210 so that the two form a whole.

[0035] like Figure 1 or Figure 2 As shown, the adjustment module 200 may include a fixed focus adjustment module 200a and a zoom adjustment module 200b, and the fixed focus adjustment module 200a and the zoom adjustment module 200b are used to adjust the positions of different lenses 121 in the axial direction of the inner core 110. Figure 3 As shown, the fixed focus adjustment module 200a and the zoom adjustment module 200b include an adjustment ring 210 and a group of second magnetic drive components 220 respectively.

[0036] The optical coupler of this embodiment further includes a clamp module 300, such as Figure 1~Figure 3 The clamp module 300 is used to engage the eyepiece cover 500 of the endoscope to couple the endoscope and the camera, as shown in FIG. Figure 1 The clamp module 300 is fixedly connected to the inner core 110, and the clamp module 300 is located at the far end of the inner core 110, as shown in FIG. Figure 1~Figure 3 As shown. Exemplarily, the clamp module 300 includes a plurality of openable and closable clamps 320, and the eyepiece cover 500 can be installed in the space enclosed by the plurality of clamps 320 by opening the clamps 320, and then the clamps 320 are closed to fix the eyepiece cover 500; or the eyepiece cover 500 can be removed from the clamp module 300 by opening the clamps 320. The specific structure of the clamp 320 can be the prior art, and will not be described in detail here.

[0037] In some embodiments, the clamp module 300 is formed as an integral structure. Fig.15 and Fig.16As shown, the clamp module 300 at least includes a clamp seat 310, a plurality of clamps 320, a housing 330 and a dial assembly 340. The clamp module 300 is formed as an integrated structure, which means that the clamp seat 310, the plurality of clamps 320, the housing 330 and the dial assembly 340 are fixed and / or connected to each other so that they form a whole.

[0038] like Fig.15 and Fig.16 As shown, a mounting groove is provided on the clamp seat 310, and the clamp 320 is slidably arranged in the mounting groove. A shell 330 is provided outside the plurality of clamps 320, and a dial assembly 340 is further provided on the shell 330. The dial assembly 340 is used to control the opening and closing of the clamp 320. The structures of the clamp seat 310, the clamp 320, the shell 330 and the dial assembly 340 can be the existing technology, and will not be described in detail here.

[0039] The optical coupler of this embodiment includes an inner core module 100, an adjustment module 200 and a clamp module 300. The inner core module 100, the adjustment module 200 and the clamp module 300 are all integrated structures. During assembly, the adjustment module 200 only needs to be sleeved on the outer periphery of the inner core module 100 along the axial direction of the inner core module 100, and then the clamp module 300 is fixed to the far end of the inner core module 100 to complete the assembly.

[0040] Compared with the traditional optical coupler, this assembly method reduces the installation of the optical component 120 and the sealing process of the inner tube end, and also reduces the assembly of the adjustment ring and the assembly process of multiple clamps, simplifies the assembly procedure, improves the assembly efficiency of the optical coupler, and solves the technical problem of low assembly efficiency of the optical coupler in the related art.

[0041] In some embodiments, the inner core module 100 is a closed structure, so as to avoid the optical component 120 from being contaminated and reduce the requirement for sealing between the adjustment module 200 and the inner core module 100 .

[0042] In some embodiments, the inner core 110 is further provided with a first magnetic drive assembly 130, such as Figure 7 The first magnetic drive assembly 130 is fixedly connected to the optical assembly 120. The adjustment module 200 includes an adjustment ring 210 and a second magnetic drive assembly 220. Figure 3 The second magnetic drive assembly 220 is fixed on the adjustment ring 210 , and the second magnetic drive assembly 220 and the first magnetic drive assembly 130 attract each other, and based on the rotation of the adjustment ring 210 , the optical assembly 120 is driven to move along the axial direction of the inner core 110 .

[0043] In the conventional technology, a mechanical driving structure passing through the wall of the inner core 110 is used to adjust the position of the lens 121. This method results in an opening on the inner core 110, and the lens 121 in the inner core 110 is easily contaminated. In order to reduce the hidden danger of the lens 121 being contaminated, a high sealing requirement is imposed on the adjustment ring 210 and the inner core 110. However, after the adjustment ring 210 is rotated repeatedly, the sealing failure problem is likely to occur.

[0044] The optical coupler of this embodiment adjusts the position of the lens 121 through the cooperation of the first magnetic drive component 130 and the second magnetic drive component 220. This driving method can make the inner core module 100 a closed structure, thereby reducing the risk of contamination of the lens 121 and the sealing requirement between the adjustment ring 210 and the inner core 110, and the sealing of the inner core module 100 is not easily reduced by the extended use time.

[0045] In some embodiments, an inner sleeve 140 is further disposed in the inner core 110. The optical component 120 is disposed in the inner sleeve 140, and the first magnetic drive component 130 is rotatably disposed on the outer wall of the inner sleeve 140. Figure 7~Figure 9 In the optical coupler of this embodiment, the first magnetic drive assembly 130 is rotatably arranged on the outer wall of the inner sleeve 140. Driven by the second magnetic drive assembly 220, the first magnetic drive assembly 130 rotates along the circumferential direction of the inner sleeve 140, which can improve the reliability of the rotation of the first magnetic drive assembly 130.

[0046] In some embodiments, the optical assembly 120 includes a lens 121, such as Fig. 9 As shown. Exemplarily, the lens 121 includes a first lens 121a, a second lens 121b, a third lens 121c and a fourth lens 121d. Fig. 9 As shown. The first lens 121a, the second lens 121b, the third lens 121c and the fourth lens 121d are distributed along the axial direction of the inner core 110. The first lens 121a, the second lens 121b, the third lens 121c and the fourth lens 121d are one or more of a lens, a prism and the like. Exemplarily, at least one of the first lens 121a, the second lens 121b, the third lens 121c and the fourth lens 121d can be moved along the axial direction of the inner core 110 to adjust the image size.

[0047] In some embodiments, the optical assembly 120 further includes a mounting seat 122, such as Figure 8 The mounting seat 122 is used to provide a mounting base for the lens 121. For example, the lens 121 is provided with a first convex column 1211, and the mounting seat 122 is provided with an inclined groove 1221. Figure 8 and Fig. 9A first slide groove 141 is provided on the inner wall surface of the inner sleeve 140, and the first slide groove 141 is arranged along the axial direction of the inner sleeve 140, as shown in FIG. Fig.10 and Fig.11 When the mounting seat 122 rotates, the first protrusion 1211 can be driven to slide in the first slide groove 141. Exemplarily, a plurality of first protrusions 1211 are provided in the circumferential direction of the lens 121, so as to improve the consistency of movement of the lens 121 at various locations. Fig. 9 The schematic diagram shows that three first protrusions 1211 are provided in the circumferential direction of the lens 121. Accordingly, Fig.10 and Fig.11 The above diagram shows a schematic diagram of three first sliding grooves 141 being provided on the inner wall surface of the inner sleeve 140 .

[0048] The inclined groove 1221 in this embodiment is inclined relative to the axial direction and radial direction of the mounting seat 122. Figure 8 The inclined groove 1221 can also be said to be a spiral groove.

[0049] In some embodiments, the mounting seat 122 is provided with a second boss 1222, and the second boss 1222 passes through the inner sleeve 140 and is fixedly connected to the first magnetic drive assembly 130. Figure 7 Thus, the first magnetic drive assembly 130 can be rotated to drive the mounting seat 122 to rotate, and then the first protruding column 1211 can slide in the first sliding groove 141 to adjust the position of the first protruding column 1211 in the axial direction of the inner core 110 .

[0050] Exemplarily, a second slide groove 142 is provided on the inner wall surface of the inner sleeve 140. Fig.11 As shown. The second slide groove 142 is arranged along the circumferential direction of the inner sleeve 140. The second boss 1222 is located in the second slide groove 142. When the first magnetic drive assembly 130 rotates, the first magnetic drive assembly 130 can drive the mounting seat 122 to rotate through the second boss 1222, thereby allowing the first boss 1211 to slide in the inclined groove 1221. The second slide groove 142 is used to provide a clearance space for the second boss 1222.

[0051] In some embodiments, the first magnetic drive assembly 130 includes a first ring body 131 and a first magnet 132. The number of the first magnet 132 is multiple, and the multiple first magnets 132 are fixed to the first ring body 131. Fig.12 As shown. Exemplarily, the first ring body 131 is made of plastic. Exemplarily, a groove is provided on the first ring body 131, and the first magnet 132 is embedded in the groove and has an interference fit with the groove. Exemplarily, the first magnet 132 is fixedly connected to the first ring body 131 by bonding.

[0052] Exemplarily, the first ring body 131 is a polymer plastic with weak elasticity. The first ring body 131 is made of materials such as nylon and polyethylene. In the optical coupler of this embodiment, a plurality of first magnets 132 are fixed to the first ring body 131. When the first magnetic drive assembly 130 is subjected to force, the stress can be dispersed through the first ring body 131, thereby reducing the hidden danger of failure of the first magnet 132. In addition, the first ring body 131 also has the advantage of being light in weight; and because it has weak elasticity, it can also reduce the hidden danger of wear.

[0053] In some embodiments, the first magnet 132 at least partially protrudes from the surface of the first ring 131, such as Fig.12 As shown. Exemplarily, the thickness of the first ring body 131 is less than the height of the first magnet 132, so that when the first magnet 132 is embedded in the first ring body 131, the first magnet 132 partially protrudes from the surface of the first ring body 131, as shown in FIG. Fig.12 In the optical coupler of this embodiment, the first magnet 132 at least partially protrudes from the surface of the first ring body 131, which not only helps to reduce the weight of the first ring body 131, but also enables the first magnet 132 and the second magnet 222 in the second magnetic drive assembly 220 to have better magnetic attraction, thereby ensuring the reliability of the magnetic drive.

[0054] In some embodiments, a preset gap is maintained between the surface of the first magnet 132 and the inner wall of the inner core 110. Exemplarily, the preset gap is, for example, 0.1 to 1 mm. In the optical coupler of this embodiment, the surface of the first magnet 132 is not in direct contact with the inner wall of the inner core 110, which can reduce the resistance encountered by the first magnetic drive assembly 130 during rotation, and can also reduce the hidden danger of failure of the first magnet 132 due to wear, thereby improving the reliability of the rotation of the first magnetic drive assembly 130.

[0055] In some embodiments, the second magnetic drive assembly 220 includes a second ring 221 and a second magnet 222. Fig.13 The number of the second magnets 222 is multiple, and the multiple second magnets 222 are fixed on the second ring body 221, as shown in FIG. Fig.13 At the position corresponding to the first magnet 132 , the magnetism of the second magnet 222 is opposite to that of the first magnet 132 .

[0056] Exemplarily, along the circumferential direction of the first ring body 131, the first magnets 132 are arranged in the manner of NSNSN; opposite to the first magnets 132, along the circumferential direction of the second ring body 221, the second magnets 222 are arranged in the manner of SNSNS. The magnetism of the first magnets 132 is opposite to that of the second magnets 222, and the positions of the first magnets 132 and the positions of the second magnets 222 correspond to each other, so that the first magnets 132 and the second magnets 222 attract each other, and when the second magnets 222 rotate, the first magnets 132 can be driven to rotate.

[0057] Exemplarily, the second ring body 221 is a polymer plastic with weak elasticity. The second ring body 221 is made of materials such as nylon and polyethylene. In the optical coupler of this embodiment, a plurality of second magnets 222 are fixed on the second ring body 221. When the second magnetic drive assembly 220 is subjected to force, the stress can be dispersed through the second ring body 221, thereby reducing the hidden danger of failure of the second magnet 222. In addition, the second ring body 221 also has the advantage of being light in weight; and because it has weak elasticity, it can also reduce the hidden danger of wear.

[0058] Exemplarily, a groove is provided on the second ring body 221, and the second magnet 222 is embedded in the groove and has an interference fit with the groove, such as Fig.13 As shown. Exemplarily, the second magnet 222 and the second ring body 221 are fixedly connected by bonding.

[0059] In some embodiments, the second magnet 222 is embedded in the second ring body 221, and the surface of the second magnet 222 is lower than the surface of the second ring body 221. Exemplarily, a groove is provided in the second ring body 221, and the depth of the groove is greater than the thickness of the second magnet 222, so that after the second magnet 222 is embedded in the second ring body 221, the surface of the second magnet 222 is lower than the surface of the second ring body 221. Since the surface of the second magnet 222 is lower than the surface of the second ring body 221, when the second magnetic drive assembly 220 rotates, the second magnet 222 can be prevented from contacting the outer wall of the inner core 110, thereby reducing the hidden danger of failure of the second magnet 222.

[0060] In some embodiments, the optical coupler further includes a sealing component 400, such as Figure 3 The sealing assembly 400 is located at both ends of the second magnetic drive assembly 220, and the sealing assembly 400 keeps the inner core module 100 and the adjustment ring 210 sealed. Figure 4 The optical coupler of this embodiment can place the second magnetic drive assembly 220 in a sealed environment through the sealing assembly 400, thereby reducing the influence of the external environment (such as the external high temperature environment during high-pressure steam sterilization) on the magnetic properties of the second magnetic drive assembly 220.

[0061] In some embodiments, a mounting cavity 212 is provided on the inner wall of the adjusting ring 210, and the mounting cavity 212 extends to the end surface of the adjusting ring 210, such as Figure 4 and Fig.14 After the sealing assembly 400 is installed in the installation cavity 212, the side wall of the sealing assembly 400 can abut against the first inner wall 212a of the installation cavity 212 to form a first sealing portion, and the end surface of the sealing assembly 400 can also abut against the second inner wall 212b of the installation cavity 212 to form a second sealing portion, as shown in FIG. Figure 4 and Fig.14 shown.

[0062] The inventors found in their research that in the optical coupler in the related art, a groove is formed on the adjustment ring 210, and the sealing ring is installed in the groove. However, in order to facilitate the installation of the sealing ring, the width of the groove is usually greater than the width of the sealing ring in the axial direction of the optical coupler. After the sealing ring is installed in the groove, a sealing portion is formed between the side wall of the sealing ring and the adjustment ring 210, which has a sealing effect. When the adjustment ring 210 is rotated, the adjustment ring 210 repeatedly squeezes and rubs the sealing ring, which may easily lead to the hidden danger of reduced sealing performance of the sealing ring.

[0063] The optical coupler of this embodiment can form sealing portions on different inner walls of the adjustment ring 210 . Compared with the sealing ring in the related art that only forms a sealing portion in a single direction, this helps to improve the sealing performance between the sealing assembly 400 and the adjustment ring 210 .

[0064] On the other hand, in the optical coupler of this embodiment, the installation cavity 212 extends to the end face of the adjustment ring 210, that is, the installation cavity 212 is an open structure at the inner wall and the end face of the adjustment ring 210. When assembling the adjustment ring 210, the first sealing part and the second sealing part can be formed by moving and squeezing the sealing component 400 along the axial direction of the inner core module 100. It can be seen that the structure of the installation cavity 212 is not only conducive to forming the first sealing part and the second sealing part, but also has the advantage of convenient installation of the sealing component 400 and the adjustment ring 210, which is conducive to realizing the axial quick installation of the optical coupler.

[0065] In some embodiments, when the adjustment module 200 includes a focus adjustment module 200a and a zoom adjustment module 200b, both ends of the focus adjustment module 200a and both ends of the zoom adjustment module 200b may be provided with sealing components 400 to further enhance the sealing performance of the optical coupler. Figure 4 shown.

[0066] In some embodiments, the sealing assembly 400 includes a sealing ring 410, such as Figure 3 and Figure 4 The sealing ring 410 is used to maintain a sealed connection between the adjustment ring 210 and the inner core module 100 .

[0067] In some embodiments, the sealing assembly 400 further includes a support portion 420, such as Figure 3 and Figure 4 As shown. Exemplarily, the support portion 420 may be a separate structure, or the support portion 420 may be an integrated structure with the adjustment ring 210. The support portion 420 may be made of an elastic material such as rubber.

[0068] Exemplarily, a groove is provided on the support portion 420, and the sealing ring 410 is embedded in the groove and has an interference fit with the groove. When the sealing assembly 400 is assembled in the installation cavity 212, the side wall of the sealing ring 410 and the support portion 420 abuts against the first inner wall 212a of the installation cavity 212 to form a first sealing portion, and the end surface of the support portion 420 abuts against the second inner wall 212b of the installation cavity 212 to form a second sealing portion.

[0069] In some embodiments, the support portion 420 located between the focus adjustment module 200a and the zoom adjustment module 200b is provided with two sealing rings 410, and the two sealing rings 410 are respectively sealed with the focus adjustment module 200a and the zoom adjustment module 200b. Figure 3 and Figure 4 This structure, when assembling the optical coupler, can not only further improve the assembly efficiency and realize the axial quick assembly of the optical coupler, but also help to keep the optical coupler in a compact structure.

[0070] In some embodiments, the adjusting ring 210 is provided with one of the limiting groove 211 and the limiting column 150, and the inner core module 100 and / or the sealing assembly 400 are provided with the other of the limiting groove 211 and the limiting column 150, and the limiting column 150 is located in the limiting groove 211. Figure 5 As shown, the adjusting ring 210 is provided with a limiting groove 211, and the inner core module 100 and / or the sealing assembly 400 is provided with a limiting column 150. When the adjusting ring 210 rotates until the side wall of the limiting groove 211 abuts against the limiting column 150, the adjusting ring 210 can be restricted from further rotating.

[0071] The optical coupler of this embodiment can limit the maximum rotation angle of the adjustment ring 210 through the cooperation between the limiting groove 211 and the limiting column 150 .

[0072] The second aspect of this embodiment describes in detail the assembly method of the optical coupler.

[0073] The optical coupler assembly method of this embodiment, the optical coupler is the optical coupler of any technical solution in the first aspect of this embodiment. The optical coupler assembly method comprises the following steps: Step 100 : sleeve the adjustment module 200 on the outside of the inner core 110 along the axial direction of the inner core module 100 , and rotatably install the adjustment module 200 on the outside of the inner core 110 .

[0074] Step 200: Fixedly connect the clamp module 300 to the distal end of the inner core 110. Exemplarily, the clamp module 300 and the distal end of the inner core 110 may be fixedly connected by screws.

[0075] The assembly method of the optical coupler of this embodiment only requires to sleeve the adjustment module 200 on the outer periphery of the inner core module 100 along the axial direction of the inner core module 100, and then fix the clamp module 300 to the far end of the inner core module 100 to complete the assembly, which has the advantages of simple assembly process and high assembly efficiency.

[0076] The third aspect of this embodiment describes the endoscope system in detail.

[0077] The endoscope system of this embodiment includes an endoscope, a camera head and an optical coupler, and the optical coupler is used to detachably couple the endoscope to the camera head. The optical coupler is the optical coupler of any technical solution in the first aspect of this embodiment. The structures of the endoscope and the camera head can be the same as those in the prior art, and will not be repeated here. Exemplarily, the endoscope is a hard endoscope, and the optical coupler is used to clamp the eyepiece cover 500 of the endoscope, thereby coupling the endoscope to the camera head.

[0078] The endoscope system of this embodiment has the optical coupler of any one of the technical solutions in this embodiment, so that the assembly efficiency of the optical coupler in the endoscope system of this embodiment can be improved.

[0079] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0080] In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0081] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An optical coupler, characterized in that: The inner core module (100) comprises an inner core (110) and an optical component (120) located in the inner core (110), wherein the inner core (110) and the optical component (120) form an integrated structure; The optical coupler further comprises an adjustment module (200), the adjustment module (200) being formed as an integrated structure, the adjustment module (200) being sleeved outside the inner core (110) along the axial direction of the inner core module (100), and the adjustment module (200) being rotatably arranged outside the inner core (110); The optical coupler further comprises a clamp module (300), the clamp module (300) being formed as an integrated structure, and the clamp module (300) being fixedly connected to the distal end of the inner core (110).

2. The optical coupler according to claim 1, characterized in that The inner core module (100) is a closed structure, and a first magnetic drive component (130) is also provided in the inner core (110), wherein the first magnetic drive component (130) is fixedly connected to the optical component (120); The adjustment module (200) comprises an adjustment ring (210) and a second magnetic drive component (220), wherein the second magnetic drive component (220) is fixed on the adjustment ring (210), the second magnetic drive component (220) and the first magnetic drive component (130) attract each other, and based on the rotation of the adjustment ring (210), the optical component (120) is driven to move along the axial direction of the inner core (110).

3. The optical coupler according to claim 2, characterized in that An inner sleeve (140) is also provided in the inner core (110), the optical component (120) is located in the inner sleeve (140), and the first magnetic drive component (130) is rotatably disposed on the outer wall of the inner sleeve (140).

4. The optical coupler according to claim 3, characterized in that: The optical component (120) comprises a lens (121) and a mounting seat (122); the lens (121) is provided with a first boss (1211); the mounting seat (122) is provided with an inclined groove (1221); the inner sleeve (140) is provided with a first slide groove (141); the first slide groove (141) is arranged along the axial direction of the inner sleeve (140); and the first boss (1211) is slidably arranged in the inclined groove (1221) and the first slide groove (141); the mounting seat (122) is provided with a second boss (1222); the second boss (1222) passes through the inner sleeve (140) and is fixedly connected to the first magnetic drive component (130).

5. The optical coupler according to claim 2, characterized in that: The first magnetic drive assembly (130) comprises a first ring body (131) and a first magnet (132); there are a plurality of first magnets (132), and the plurality of first magnets (132) are fixed to the first ring body (131); The second magnetic drive assembly (220) comprises a second ring body (221) and a second magnet (222), wherein the number of the second magnets (222) is plural, and the plural second magnets (222) are fixed on the second ring body (221) at positions corresponding to the first magnet (132), and the magnetism of the second magnet (222) is opposite to that of the first magnet (132).

6. The optical coupler according to claim 5, characterized in that The first magnet (132) at least partially protrudes from the surface of the first ring body (131); and / or a preset gap is maintained between the surface of the first magnet (132) and the inner wall of the inner core (110); and / or the first ring body (131) is made of plastic; The second magnet (222) is embedded in the second ring body (221), and the surface of the second magnet (222) is lower than the surface of the second ring body (221); and / or the second ring body (221) is made of plastic.

7. The optical coupler according to any one of claims 2 to 6, characterized in that: It also comprises a sealing component (400), the sealing component (400) being located at both ends of the second magnetic drive component (220), and the sealing component (400) enables the inner core module (100) and the adjustment ring (210) to maintain a sealed state.

8. The optical coupler according to claim 7, characterized in that: The adjusting ring (210) is provided with one of a limiting groove (211) and a limiting column (150), the inner core module (100) and / or the sealing assembly (400) is provided with the other of the limiting groove (211) and the limiting column (150), and the limiting column (150) is located in the limiting groove (211).

9. A method for assembling an optical coupler, characterized in that: The optical coupler is the optical coupler according to any one of claims 1 to 8, and the assembly method of the optical coupler comprises the following steps: The adjusting module (200) is sleeved outside the inner core (110) along the axial direction of the inner core module (100), and the adjusting module (200) is rotatably mounted outside the inner core (110); The clamp module (300) is fixedly connected to the distal end of the inner core (110).

10. An endoscope system, characterized in that: The invention comprises an endoscope, a camera head and an optical coupler, wherein the optical coupler is the optical coupler according to any one of claims 1 to 8, and the optical coupler is used for detachably coupling the endoscope to the camera head.

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